Improvement in automatic gates



Unrrnn LEl/VIS N. ALLENDORF, OF POUGHKEEPSIE, NEW YORK.

IMPROVEMENT IN AUTGWIATIC GATES.

Specification forming part of Letters Patent No. 5 65,653. dated July20, 1875 application filed January 28, 1875.

To all whom it may concern:

Be it known that I, Lnwrs N. ALLENDORF, of Poughkeepsie, in the countyof Dutchess and State of New York, have invented a certain new anduseful Improvement in Automatic Gatesy-and I do hereby declare that thefollowing -is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, making part of thisspecification, in which- Figure 1. is a view of the gate when open. Fig.2 is a view of the gate when closed. Fig. 3 is a view of thecrank-tripping device.

Similar letters of reference indicate correspondin g parts.

This invention consists in the improvement of automatic gates, ashereinafter described, and pointed out in the claim.

In the drawings, A represents the gate, connected at its top to the posta by eye m and staple n, and at its lower end to an oscillating orswinging hingerod, c, which projects out from the inner side of thegate-post, and passes up through an eye, j, upon the lower end of thegate-bar b, and extends upward sufficientl y for the attachment of thetrip and latch con nections. The elbowlatch, as shown at (Z, isconnected to the upper end of the oscillating rod 0 by rod 0 and linlrf,said latch, when the gate is closed, falling down in a notched plate, I,secured to the inner side of the post 25. The crank-tripping device,which automatically operates the gate, is arranged upon each side of thesame, and consists of a crank or bent rod, 7t, one end of which passesthrough an eye, 0, secured to a post, 7', driven in the ground, theother end passing through a slot formed in the lower end of a shortpost, p. This crank communicates with the oscillating rod 0 by rods andchains g g s, or other suit able means of connection, the rods g havingsuspended thereon a weight, a, the chains 8 passing over a pulley, i,secured to the upper end of the post p. The weight it serves thepurposeof keeping the crank-rod k in an upright position ready to be againacted upon by the wheel of the vehicle passing over it, as illustratedin Fig. 3 of the drawings.

The operation is as follows; hen the wheel of the vehicle strikes therod 76 upon either side of the gate the oscillating rod 0 will bebrought to an angle, or carried out of its vertical position, as shownin Fig. 1, which will raise the latch (Z, through the medium of theconnecting-link 0, allowing the gate to swing by its own gravity in anopposite direction, and, when the opposite rod 70 is-reached, theposition of the oscillating rod will be reversed, and the gate willswing to its closed position, when the latch (Z will drop into thenotched. plate Z, and securely fasten the gate.

Having now fully described my invention, what I claim as new, and desireto secure by Letters Patent, is-

The gate A, hinged at its upper end to the post a, and at its lower endto the swinging or oscillating rod 0, which is connected with the latch61 by means of rod 0, in combination with the operating mechanism,consisting of the crank-rod k, rod and chain connections 9 g s, andweight'u, substantially as and for the purpose specified.

In testimony that I claim the foregoing I have hereunto set my handthis22d day of January, 1875.-

LEWIS N. ALLENDORF.

Witnesses: I

PAUL FLAGLER, J. D. WILBER.

4 Sheets--Sheet1- C. ARMS.

Pocket-Bonk. N0,165,654 Patentedluly20,l875.

u. PETERS, PHOTO-UTHOGIIAPNER, WASHINGTON. D. O.

